CRYSTAL 40ZX USER GUIDE
9
5. HOOK FLASH
You shall have to use the “Hook-Flash”, prior to dialing any
facility code.
Hook flash (HF) is a gentle/ slow tap of the cradle switch.
After HF, you shall get a slow acceptance tone.
Ex. To transfer a P&T call -
☞☞
☞☞
☞ H/F (You shall get acceptance beeps)
☞☞
☞☞
☞ Now dial extn. no. and your call is transferred.
5.1 The Thumb-Rule for using Hook Flash
Whenever dialing any extn. number or code from - dial
tone/call forward dial tone/engaged tone, dial straight away.
For dialing extn. number or facility code from ring back
tone / conversation mode, first HF and then dial the
required number.
NOTE:
1. After completion of any call (internal / external) replace
handset for minimum 1 sec for disconnection, before
going off hook for the second call.
2. If your instrument is provided with a flash key, enquire
the timing of key from your system manager / dealer. If
it is below 100 milliseconds, do not use this key (it
shall be ignored by the system). You may use the cradle
switch for HF. If the timing is between 100-900 msec,
you may use this flash key for HF.
3. If while transferring a P&T call, you press any wrong
code / extn. no. do not panic. You can HF anytime. You
shall come back in speech mode with P&T call. Now,
proceed again.
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